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Non-attenuating light collimating articles for graphic arts

  • US 8,441,730 B2
  • Filed: 11/14/2007
  • Issued: 05/14/2013
  • Est. Priority Date: 11/14/2006
  • Status: Active Grant
First Claim
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1. A phototool, comprising:

  • a photographic negative; and

    a microstructured surface disposed on a first surface of the photographic negative, the microstructured surface comprising a plurality of light collimating articles, wherein the plurality of light collimating articles comprises one of the following;

    a plurality of Fresnel lenses, an array of a plurality of prismatic light deflecting microlenses, or an array of a plurality of cylindrical microlenses.

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